It is proposed to improve the logistics of providing utilities (electricity and chilling) to battlefield military units. The goal is to provide 30% savings in fuel, generator capacity, and system weight for meeting a representative demand of a forward operating unit. The key savings are from using generator waste heat to supply part or all of the heat demand of a heat-actuated cooling system (HACS). The ammonia absorption refrigeration units (AARU) developed by Energy Concepts Co. have demonstrated all the required HACS operating characteristics except the low weight. That is to be achieved in this project by applying state-of-art microchannel heat exchange technology to key AARU components.